Re: [RFC PATCH 00/14] Introducing TIF_NOTIFY_IPI flag

[Linus Walleij]

Hi K Prateek,

I trimmed down the recipient list so we don't bounce.

On Tue, Feb 20, 2024 at 6:15 PM K Prateek Nayak <kprateek.nayak@amdcom> wrote:

> Same experiment was repeated on an dual socket ARM server (2 x 64C)
> which too saw a significant improvement in the ipistorm performance:
>
>   ==================================================================
>   Test          : ipistorm (modified)
>   Units         : Normalized runtime
>   Interpretation: Lower is better
>   Statistic     : AMean
>   ==================================================================
>   kernel:                               time [pct imp]
>   tip:sched/core                        1.00 [0.00]
>   tip:sched/core + TIF_NOTIFY_IPI       0.41 [59.29]

Is that a 64bit ARM64 system or really an ARM 32-bit 64-core system?

I'm confused because:

> K Prateek Nayak (10):
>   arm/thread_info: Introduce TIF_NOTIFY_IPI flag

There is no arm64 patch in the patch series.

I can perhaps test the patches on an ARM32 system but all I have is dualcore
I think.

Yours,
Linus Walleij